Portal Unofficially Ported to iPhone?

A video that appears to show a Unity-coded version of Valve's first-person puzzler Portal has been posted on Youtube.

While immediately suspect for looking as good as it does, there are enough differences between the one-room demo and the full version of Portal to suggest that the effort is authentic. The original poster claims that the video is the result of three weeks of work.

PocketGamer seems to buy into it, but we'll let you guys be the judge on this one.
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